After completing this unit, you should be able to: Describe the structural organization of the prokaryotic genome and the eukaryotic genome; list the phases of the cell cycle; describe the sequence of events during each phase; list the phases of mitosis and describe the events characteristic of each phase;. | Lecture Biology (7th edition) - Chapter 12: The cell cycle Chapter 12 The Cell Cycle PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece Lectures by Chris Romero Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Overview: The Key Roles of Cell Division • The continuity of life – Is based upon the reproduction of cells, or cell division Figure Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Unicellular organisms – Reproduce by cell division 100 µm (a) Reproduction. An amoeba, a single-celled eukaryote, is dividing into two cells. Each new cell will be an individual Figure A organism (LM). Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Multicellular organisms depend on cell division for – Development from a fertilized cell – Growth – Repair 200 µm 20 µm (b) Growth and development. (c) Tissue renewal. These dividing This micrograph shows a bone marrow cells (arrow) will sand dollar embryo shortly give rise to new blood cells (LM). after the fertilized egg divided, Figure B, C forming two cells (LM). Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • The cell division process – Is an integral part of the cell cycle Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • Concept : Cell division results in genetically identical daughter cells • Cells duplicate their genetic material – Before they divide, ensuring that each daughter cell receives an exact copy of the genetic material, DNA Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Cellular Organization of the Genetic Material • A cell’s endowment of DNA, its genetic information – Is called its genome Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings • The DNA molecules in a cell – Are .
